<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>毛玻璃拟态登录界面</title>
  <link rel="stylesheet" href="login.css">
</head>
<body>
  <form action="">
    <h1 class="tt">BBSBB</h1>
    <input type="text" placeholder="用户名">
    <input type="password" placeholder="密码">
    <input type="submit" class="btn tt" value="登 录" >
  </form>
</body>
</html>